Manufacturing And Production Technology
During normalizing process of steel, the specimen is heated

Above the upper critical temperature and cooled in still air.
Between the upper and lower critical temperature and cooled in furnace.
Between the upper and lower critical temperature and cooled in still air.
Above the upper critical temperature and cooled in furnace.

ANSWER DOWNLOAD EXAMIANS APP

Manufacturing And Production Technology
In ultrasonic machining, the metal is removed by

Direct contact of tool with the work
Maintaining an electrolyte between the work and tool in a very small gap between the two
Erosion caused by rapidly recurring spark discharges between the tool and work
Using abrasive slurry between the tool and work

ANSWER DOWNLOAD EXAMIANS APP